Chair construction

Abstract

A chair construction having a molded plastic shell that is interconnected with a tubular supporting structure in a manner that simplifies the manufacture of the chair and at the same time produces a durable construction that can withstand continuous, normal classroom type use. The supporting structure includes specially formed rear legs, the upper portions of which are interconnected with the back support of the molded plastic shell using a specially designed tube end connector mechanism. More particularly, the molded plastic shell includes integrally molded connector tabs to which the rear legs of the supporting frame of the chair are connected by means of the connector mechanism.

Description

1. Field of the InventionThe present invention relates generally to furniture. More particularly, the invention concerns a chair construction having novel means for connecting of the molded plastic seat and back portions of the chair to a uniquely configured tubular supporting frame.2. Discussion of the Prior ArtThere is a growing demand for rugged, yet comfortable and attractive utility chairs of the type used in schools, auditoriums, convention centers, hotels and the like. These types of chairs are subjected to continuous and rigorous use and the impact loads frequently imposed on the chairs can often damage or destroy the structural integrity of the chairs rendering them unsafe for use. Because the prior art chairs are primarily designed for durability and cost effectiveness, the chairs are typically uncomfortable and usually quite unattractive.With respect to the structural aspects of the prior art chairs, a particular problem exists in the manner in which the chair seat and ba...

AI Technical Summary

Benefits of technology

Another object of the invention is to provide a chair of the aforementioned character in which an integrally molded plastic shell is uniquely interconnected with a rugged steel supporting frame in a manner which simplifies manufacture of the chair and at the same time produces a durable construction which can withstand continuous, normal classroom type use.

Another object of the invention is to provide a durable and attractive utility chair and the method of making the chair which is highly cost effective so that the chair can effectively compete in the market place with prior art chairs of the same general character.

Problems solved by technology

These types of chairs are subjected to continuous and rigorous use and the impact loads frequently imposed on the chairs can often damage or destroy the structural integrity of the chairs rendering them unsafe for use.

Because the prior art chairs are primarily designed for durability and cost effectiveness, the chairs are typically uncomfortable and usually quite unattractive.

With respect to the structural aspects of the prior art chairs, a particular problem exists in the manner in which the chair seat and back portions of the chair are affixed to the frame portion.

When the seat and back portions of the utility chair are formed from a moldable plastic, the plastic on occasion, fails in the area of the connectors causing the seat or back elements to loosen or become separated from the structural frame.

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